{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:20:28.397527", "data_source": "ERA5", "website": "http://wexa.jamstec.go.jp", "Author": "Patrick Martineau"}, "event_id": {"name": "Event ID", "description": "A unique identifier based on: beginning_date, end_date, longitude, and latitude", "value": "2019-Sep-09_to_2019-Sep-12_136.0_-68.5"}, "event_label": {"name": "Event label", "description": "Integer-valued grid identifier that uniquely labels each detected extreme event in space and time, consistent with the corresponding labels stored in the NetCDF dataset.", "value": 2019090000284}, "status": {"name": "Status", "description": "An ongoing event denotes an event that lasts up to the latest data available. These events are subject to change as newer data is added.", "value": false}, "start_date": {"name": "Start date", "description": "First date on which grid points are under the influence of an event", "value": "September 09 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 12 2019"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "figures_available": {"name": "Figures available", "description": "True if figures were pre-generated for this event", "value": true}, "detection_var": {"name": "Detection variable", "description": "Variable used for the detection scheme", "value": "t2m"}, "event_type": {"name": "Event type", "description": "Type of the event detected", "value": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 192376.12552709604}, "countries_affected": {"name": "Countries affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the countries affected by an event during its lifetime.", "value": ["Antarctica"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Antarctica"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Antarctica"]}, "oceans_affected": {"name": "Ocean basins affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the ocean basins affected by an event during its lifetime.", "value": []}, "center_lat": {"name": "Center latitude", "description": "Latitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": -68.5}, "center_lon": {"name": "Center longitude", "description": "Longitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 136.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "136.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 120.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 138.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -72.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -66.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-09-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[120.47, -72.03], [120.25, -71.5], [120.47, -70.97], [121.0, -70.75], [121.25, -70.85], [121.32, -70.82], [121.47, -70.47], [122.0, -70.25], [122.25, -70.35], [122.32, -70.32], [122.47, -69.97], [122.82, -69.82], [122.97, -69.47], [123.5, -69.25], [123.75, -69.35], [124.0, -69.25], [124.25, -69.35], [124.32, -69.32], [124.47, -68.97], [125.0, -68.75], [125.25, -68.85], [125.5, -68.75], [125.75, -68.85], [125.82, -68.82], [125.97, -68.47], [126.5, -68.25], [126.75, -68.35], [127.0, -68.25], [127.25, -68.35], [127.5, -68.25], [127.75, -68.35], [128.0, -68.25], [128.25, -68.35], [128.32, -68.32], [128.47, -67.97], [128.82, -67.82], [128.97, -67.47], [129.5, -67.25], [129.75, -67.35], [129.82, -67.32], [129.97, -66.97], [130.5, -66.75], [130.75, -66.85], [131.0, -66.75], [131.25, -66.85], [131.5, -66.75], [131.75, -66.85], [132.0, -66.75], [132.25, -66.85], [132.5, -66.75], [132.75, -66.85], [133.0, -66.75], [133.25, -66.85], [133.32, -66.82], [133.35, -66.75], [133.25, -66.5], [133.47, -65.97], [134.0, -65.75], [134.25, -65.85], [134.5, -65.75], [134.75, -65.85], [135.0, -65.75], [135.25, -65.85], [135.5, -65.75], [135.75, -65.85], [136.0, -65.75], [136.25, -65.85], [136.5, -65.75], [136.75, -65.85], [137.0, -65.75], [137.25, -65.85], [137.5, -65.75], [138.03, -65.97], [138.18, -66.32], [138.53, -66.47], [138.75, -67.0], [138.65, -67.25], [138.75, -67.5], [138.53, -68.03], [138.18, -68.18], [138.15, -68.25], [138.25, -68.5], [138.03, -69.03], [137.68, -69.18], [137.53, -69.53], [137.0, -69.75], [136.75, -69.65], [136.68, -69.68], [136.53, -70.03], [136.0, -70.25], [135.47, -70.03], [135.32, -69.68], [134.97, -69.53], [134.82, -69.18], [134.75, -69.15], [134.5, -69.25], [134.25, -69.15], [134.0, -69.25], [133.75, -69.15], [133.68, -69.18], [133.53, -69.53], [133.0, -69.75], [132.75, -69.65], [132.5, -69.75], [132.25, -69.65], [132.18, -69.68], [132.15, -69.75], [132.25, -70.0], [132.03, -70.53], [131.68, -70.68], [131.53, -71.03], [131.0, -71.25], [130.75, -71.15], [130.5, -71.25], [130.25, -71.15], [130.0, -71.25], [129.75, -71.15], [129.5, -71.25], [129.25, -71.15], [129.18, -71.18], [129.03, -71.53], [128.68, -71.68], [128.53, -72.03], [128.0, -72.25], [127.75, -72.15], [127.5, -72.25], [127.25, -72.15], [127.0, -72.25], [126.75, -72.15], [126.5, -72.25], [126.25, -72.15], [126.0, -72.25], [125.75, -72.15], [125.68, -72.18], [125.53, -72.53], [125.0, -72.75], [124.75, -72.65], [124.5, -72.75], [124.25, -72.65], [124.0, -72.75], [123.47, -72.53], [123.32, -72.18], [123.25, -72.15], [123.0, -72.25], [122.75, -72.15], [122.5, -72.25], [122.25, -72.15], [122.0, -72.25], [121.75, -72.15], [121.5, -72.25], [121.25, -72.15], [121.0, -72.25], [120.47, -72.03]]]]}, "2019-09-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[120.47, -72.03], [120.25, -71.5], [120.47, -70.97], [121.0, -70.75], [121.25, -70.85], [121.32, -70.82], [121.47, -70.47], [122.0, -70.25], [122.25, -70.35], [122.32, -70.32], [122.47, -69.97], [122.82, -69.82], [122.97, -69.47], [123.5, -69.25], [123.75, -69.35], [124.0, -69.25], [124.25, -69.35], [124.32, -69.32], [124.47, -68.97], [125.0, -68.75], [125.25, -68.85], [125.5, -68.75], [125.75, -68.85], [125.82, -68.82], [125.97, -68.47], [126.5, -68.25], [126.75, -68.35], [127.0, -68.25], [127.25, -68.35], [127.5, -68.25], [127.75, -68.35], [128.0, -68.25], [128.25, -68.35], [128.32, -68.32], [128.47, -67.97], [128.82, -67.82], [128.97, -67.47], [129.5, -67.25], [129.75, -67.35], [129.82, -67.32], [129.97, -66.97], [130.5, -66.75], [130.75, -66.85], [131.0, -66.75], [131.25, -66.85], [131.5, -66.75], [131.75, -66.85], [132.0, -66.75], [132.25, -66.85], [132.5, -66.75], [132.75, -66.85], [133.0, -66.75], [133.25, -66.85], [133.32, -66.82], [133.35, -66.75], [133.25, -66.5], [133.47, -65.97], [134.0, -65.75], [134.25, -65.85], [134.5, -65.75], [134.75, -65.85], [135.0, -65.75], [135.25, -65.85], [135.5, -65.75], [135.75, -65.85], [136.0, -65.75], [136.25, -65.85], [136.5, -65.75], [136.75, -65.85], [137.0, -65.75], [137.25, -65.85], [137.5, -65.75], [138.03, -65.97], [138.18, -66.32], [138.53, -66.47], [138.75, -67.0], [138.65, -67.25], [138.75, -67.5], [138.53, -68.03], [138.18, -68.18], [138.15, -68.25], [138.25, -68.5], [138.03, -69.03], [137.68, -69.18], [137.53, -69.53], [137.0, -69.75], [136.75, -69.65], [136.68, -69.68], [136.53, -70.03], [136.0, -70.25], [135.47, -70.03], [135.32, -69.68], [135.25, -69.65], [135.0, -69.75], [134.75, -69.65], [134.5, -69.75], [134.25, -69.65], [134.0, -69.75], [133.5, -69.54], [133.0, -69.75], [132.75, -69.65], [132.5, -69.75], [132.25, -69.65], [132.18, -69.68], [132.15, -69.75], [132.25, -70.0], [132.03, -70.53], [131.68, -70.68], [131.53, -71.03], [131.0, -71.25], [130.75, -71.15], [130.68, -71.18], [130.53, -71.53], [130.18, -71.68], [130.03, -72.03], [129.5, -72.25], [129.25, -72.15], [129.0, -72.25], [128.75, -72.15], [128.5, -72.25], [128.25, -72.15], [128.0, -72.25], [127.75, -72.15], [127.5, -72.25], [127.25, -72.15], [127.0, -72.25], [126.75, -72.15], [126.5, -72.25], [126.25, -72.15], [126.0, -72.25], [125.75, -72.15], [125.68, -72.18], [125.53, -72.53], [125.0, -72.75], [124.75, -72.65], [124.5, -72.75], [124.25, -72.65], [124.0, -72.75], [123.47, -72.53], [123.32, -72.18], [123.25, -72.15], [123.0, -72.25], [122.75, -72.15], [122.5, -72.25], [122.25, -72.15], [122.0, -72.25], [121.75, -72.15], [121.5, -72.25], [121.25, -72.15], [121.0, -72.25], [120.47, -72.03]]]]}, "2019-09-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[120.47, -72.03], [120.25, -71.5], [120.47, -70.97], [121.0, -70.75], [121.25, -70.85], [121.32, -70.82], [121.47, -70.47], [122.0, -70.25], [122.25, -70.35], [122.32, -70.32], [122.47, -69.97], [122.82, -69.82], [122.97, -69.47], [123.5, -69.25], [123.75, -69.35], [124.0, -69.25], [124.25, -69.35], [124.32, -69.32], [124.47, -68.97], [125.0, -68.75], [125.25, -68.85], [125.5, -68.75], [125.75, -68.85], [125.82, -68.82], [125.97, -68.47], [126.5, -68.25], [126.75, -68.35], [127.0, -68.25], [127.25, -68.35], [127.5, -68.25], [127.75, -68.35], [128.0, -68.25], [128.25, -68.35], [128.32, -68.32], [128.47, -67.97], [128.82, -67.82], [128.97, -67.47], [129.5, -67.25], [129.75, -67.35], [129.82, -67.32], [129.97, -66.97], [130.5, -66.75], [130.75, -66.85], [131.0, -66.75], [131.25, -66.85], [131.5, -66.75], [131.75, -66.85], [132.0, -66.75], [132.25, -66.85], [132.5, -66.75], [132.75, -66.85], [133.0, -66.75], [133.25, -66.85], [133.32, -66.82], [133.35, -66.75], [133.25, -66.5], [133.47, -65.97], [134.0, -65.75], [134.25, -65.85], [134.5, -65.75], [134.75, -65.85], [135.0, -65.75], [135.25, -65.85], [135.5, -65.75], [135.75, -65.85], [136.0, -65.75], [136.25, -65.85], [136.5, -65.75], [136.75, -65.85], [137.0, -65.75], [137.25, -65.85], [137.5, -65.75], [138.03, -65.97], [138.18, -66.32], [138.53, -66.47], [138.75, -67.0], [138.65, -67.25], [138.75, -67.5], [138.53, -68.03], [138.18, -68.18], [138.15, -68.25], [138.25, -68.5], [138.03, -69.03], [137.68, -69.18], [137.53, -69.53], [137.0, -69.75], [136.75, -69.65], [136.68, -69.68], [136.53, -70.03], [136.0, -70.25], [135.47, -70.03], [135.32, -69.68], [135.25, -69.65], [135.0, -69.75], [134.75, -69.65], [134.5, -69.75], [134.25, -69.65], [134.0, -69.75], [133.5, -69.54], [133.0, -69.75], [132.75, -69.65], [132.5, -69.75], [132.25, -69.65], [132.18, -69.68], [132.15, -69.75], [132.25, -70.0], [132.03, -70.53], [131.68, -70.68], [131.53, -71.03], [131.0, -71.25], [130.75, -71.15], [130.68, -71.18], [130.53, -71.53], [130.18, -71.68], [130.03, -72.03], [129.5, -72.25], [129.25, -72.15], [129.0, -72.25], [128.75, -72.15], [128.5, -72.25], [128.25, -72.15], [128.0, -72.25], [127.75, -72.15], [127.5, -72.25], [127.25, -72.15], [127.0, -72.25], [126.75, -72.15], [126.5, -72.25], [126.25, -72.15], [126.0, -72.25], [125.75, -72.15], [125.68, -72.18], [125.53, -72.53], [125.0, -72.75], [124.75, -72.65], [124.5, -72.75], [124.25, -72.65], [124.0, -72.75], [123.47, -72.53], [123.32, -72.18], [123.25, -72.15], [123.0, -72.25], [122.75, -72.15], [122.5, -72.25], [122.25, -72.15], [122.0, -72.25], [121.75, -72.15], [121.5, -72.25], [121.25, -72.15], [121.0, -72.25], [120.47, -72.03]]]]}, "2019-09-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[124.75, -70.85], [125.0, -70.75], [125.25, -70.85], [125.5, -70.75], [125.75, -70.85], [126.0, -70.75], [126.25, -70.85], [126.5, -70.75], [126.75, -70.85], [126.82, -70.82], [126.97, -70.47], [127.5, -70.25], [127.75, -70.35], [127.82, -70.32], [127.97, -69.97], [128.5, -69.75], [128.75, -69.85], [129.0, -69.75], [129.25, -69.85], [129.5, -69.75], [129.75, -69.85], [130.0, -69.75], [130.25, -69.85], [130.5, -69.75], [130.75, -69.85], [130.82, -69.82], [130.97, -69.47], [131.5, -69.25], [132.03, -69.47], [132.25, -70.0], [132.03, -70.53], [131.68, -70.68], [131.53, -71.03], [131.0, -71.25], [130.75, -71.15], [130.68, -71.18], [130.53, -71.53], [130.18, -71.68], [130.03, -72.03], [129.5, -72.25], [129.25, -72.15], [129.0, -72.25], [128.75, -72.15], [128.5, -72.25], [128.25, -72.15], [128.0, -72.25], [127.75, -72.15], [127.5, -72.25], [127.25, -72.15], [127.0, -72.25], [126.75, -72.15], [126.5, -72.25], [126.25, -72.15], [126.0, -72.25], [125.75, -72.15], [125.68, -72.18], [125.53, -72.53], [125.0, -72.75], [124.75, -72.65], [124.5, -72.75], [124.25, -72.65], [124.0, -72.75], [123.47, -72.53], [123.25, -72.0], [123.47, -71.47], [123.82, -71.32], [123.97, -70.97], [124.5, -70.75], [124.75, -70.85]]], [[[133.25, -69.0], [133.47, -68.47], [134.0, -68.25], [134.25, -68.35], [134.32, -68.32], [134.47, -67.97], [135.0, -67.75], [135.25, -67.85], [135.5, -67.75], [135.75, -67.85], [136.0, -67.75], [136.25, -67.85], [136.5, -67.75], [136.75, -67.85], [137.0, -67.75], [137.25, -67.85], [137.5, -67.75], [138.03, -67.97], [138.25, -68.5], [138.03, -69.03], [137.68, -69.18], [137.53, -69.53], [137.0, -69.75], [136.75, -69.65], [136.68, -69.68], [136.53, -70.03], [136.0, -70.25], [135.47, -70.03], [135.32, -69.68], [135.25, -69.65], [135.0, -69.75], [134.75, -69.65], [134.5, -69.75], [134.25, -69.65], [134.0, -69.75], [133.47, -69.53], [133.25, -69.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -12.990663978402779}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -9.745368275674151}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-45.13054588977084, -46.289433325130716, -47.662570343489165, -51.96358143820643]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-57.38632952400755, -57.160990319238294, -58.66156284664328, -58.40863929239654]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-8.81117399749919, -9.68966452383239, -10.942201409836878, -8.651994450472396]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-10.052279983443583, -12.438313763102087, -12.990663978402779, -10.193076522094287]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4430994679403542, -1.6026983027365072, -1.830498391727417, -1.441196963982031]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6419020404969975, -2.084109641707074, -2.181387519656429, -1.566024662337052]}}